Use a bidet you ass wiping heathens! Far less wasteful even if you feel the need to pat your ass dry with a few squares of paper when you're done. After some practice you'll realize that the butt is pretty good at self drying and shedding water.
I just had to come back and edit this to note that smearing of the poop thing seems to ingrained in the US mindset and thinking your "clean". The US has potable water and electric nearly everywhere, yep people smear the poop. Whereas you can travel to some of the poorest counties and villages in the world with none of those things, and the people still understand you wash your ass after you shit you don't just smear it around a bunch.